What keeps an inflated balloon from falling down if you rub it against your hair

Question

What keeps an inflated balloon from falling down if you rub it against your hair and place it against a wall? Rubbing distorts the atoms inside the ballon and polarizes it. When you rub the balloon against your hair, it will remove some mass from the balloon and make it lighter. When you rub the balloon against your hair, the balloon may have some oil attached to it, which can be sticky. Rubbing leaves a balloon electrically charged; the charged balloon polarizes the wall. Rubbing polarizes the air inside of the balloon.

Explanation / Answer

The correct answer should be option no. 4

i.e. Rubbing leaves a balloon electrically charged; the charged balloon polarizes the wall.

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